Study for Safety and Efficiency of Therapeutic Angiogenesis for Patients With Limb Ischemia by Transplantation of Human Cord Blood Mononuclear Cell

The purpose of this study is to analyze the safety and efficiency of therapeutic angiogenesis for patients with limb ischemia by transplantation of human cord blood mononuclear cells.

Inclusion Criteria:Patients with ischemic symptoms such as claudication, rest pain or nonhealing ischemic wound

• Without evidence of improvement in response to conventional medical therapy
• Not candidates for surgical intervention or radiologic intervention

Exclusion Criteria:

• Malignant disease
• More than 60 years old
• Other significant medical conditions, including diabetes mellitus, hypertension, hyperlipidemia, etc.